Apertured bolt applicable especially for fixing rails onto the wooden sleepers.



R. D. WAGNER.- APER'TURED BOLT, APPLICABLE ESPECIALLY FOR FIXING RAILS ONTO THE WOODEN SLEEPERS.

APPLIOATION FILED 0OT.20,19 10.

Patented Mar. 26, 1912 a h V m r i r 4 v g I. E t i 4 l 3w??? h r a A Mi mw W 1,021,390., v Patented Mai.26, 1912.

1L1 WAGNER.- APERTUEED BOLT, APPLICABLE ESPECIALLY FOR FIXING RAILS QNTO THE WOODEN SLEEPBRS.

APPLICATION FILED 001220, 1910.

2 SHEETS-SHEET 2.

Fig. 4.

UNITED STATES PATENT. oioiion.

RAOUL DIAZ WAGNER, F PARIS, FRANGE.

APERTUREI) BOLT APPLIGABLE ESPECIALLY FOR FIXING RAILS ONTO THE WOODEN SLEEPERS.

Specification of Letters Eatent.

Patented him. 26, 1912.

application filed Gctober 20, 1910. Serial No. 588,170.

1/ 0 all whom, it may comer-n Be it known that I, EUACHIL Dims lemma, :1 citizen of the Republic 01'' France, and ESL dent of Paris, France, have invented new and useful l'n'ipnwements in Apoi'tnreil Bolts Applicable *lspeeially tor l ixing Rails onto the Wooden. Sleepers, which im- PPOVGHJQIltS m'e fillly set forth in. the following 5 eeilicution.

The use of ordinary lug screws or screw bolts for secui'ii'zg fitllWzty rails to the Wooden. ties a. advantage that, owing to the 'vihmtion em cl by heavy trz'iliio, such screws gradually become loosened. slightly, anti water seeping screw soon lfSllllS in rotting the Wood, anal in destroying entirely the holding power of the bolts.

The present invent'iu has for its object the pro ision of a. do so in the nature of bolt anchor or expansion bolt which may he into Wooden ties one. which is adopted to receive and firmly hold any ordinary ieg screw having tl'irem'ls intendei for engage ment with WOU'Cl.

"Thoee expansion bolts may user primarily .loiseoorln sore in. soft Wood or they may he ins rtecl into on olrl opening in hardwood. which has so rotted. tl'iet the oiigirnl screw has lost- He h old i n p ower.

:l n nroler that my improved device may he clearly umleirstoorl, reference is hot; to the ocemnpom' thud-wing forming it part of wee-i motion. and in which,

n iL'G l is :i verticgil section of my imnrovotl expansion llolt or anchor before the insert on of the screw; .l ig. is a. similor Vi w showing the screw in. position; Fig. 3 is o sicle elevation showing the complete anchor with the screw in position therein; and, Fig. is it pi-ufspeotive \iUW ot a special key employml for setting; the anchors in position.

Referring to thev (ll21\\-lllgS in detail. my

' imnro'vml expansion holtor anchor 0on1- into the tie around the On the inside, my iInIH'OVeCl anchor is provided with ,1 continuous: spi-i'iil flange 12 which extentle from one end to the othei' of the device It will he particularlynoted that the spaces between consecutive turns of this flange much greater than the thickness of the flange itself, and that the Width or depth of the flange-increases gradually from the upper to the lower end 01 the bolt. This no lllll form of the flange results in the to notion of a central tapering opening adopt .l to rec-eve a screw.

5 reptese such it screw, which has a broad head adapted to engage the toil flange and a shank PIOi-lflfill throughout its length with sharp edged threads as is usual in wood screws. By reference to Fig. 2 it Will be seen thotthe spiral flange e is so proportioned that the threads it: of the screw g onguge with it pei feotly.

' The upper end of the expansion bolt 01* anchor preferably formed with a. notch 71- oclo-pterl to he engaged by a correspondingly shaped shoulder Z as shown in Pig. This key has a p0lyg onol or: other usual head we adopted to he engaged by on ordinary soeket Wrench, and comprises a smooth ttqtiering shank 7; adopt ed to tit within the opening defineo by the flange (2, will be evident from on inspection of Fig. 1.

ln pi'aetPe. when a. lag screw or screw bolthus i'ol. ml or Gt-l'lQL'WlSQ pilllecl out of its hole, the opei-iing thus left only he enlarged to the required extent by men-n5 of an anger end the ill'lCllOl', as shown in Fig. 1, inserted in the opening and sort-awed down into place by means of the special hey shown in Fig. 4-, in combination with on ordinary Wrenoh. The coil of it screw, such #18 g, may then be inserted. in the upper eml of the anchor urnl screwed. (lown in the ordinary manner, the threads engaging with the spiral flange elunvn in Fig. 2. The result of forcing the scion into the macho! is to expand the lower owl thrn'oot 21:5 illustrated in Figs. 2 uml 3? and thus CLLUSQ- the herbs 2' and to llite into the wood, thue assisting the threads 11 in holding: lhe slot-ice in position.

It will he obsewml that my improved zm- '-l'](H or expansion boltis formed of but a single piece and that it is capable of use with any oi'dinzuy wood or log screw, no special form of screw or'holt being necessztry. 'It is therefore thought that the many tonne-cl on special key,

, spiral flange arranged on advantages of my invention will be readily appreciated by those familiar with such matters.

What I claim is threaded screw, said flange increasing in width from one end of the body to the other, whereby said opening is rendered tapering.

4. Anexpansion bolt comprising a hollow 1. An expansion bolt comprising a hollow substantially cylindrical body, split adjabody and a continuous flat spiral flange cent one encLand continuous at its other end, formed on the inside thereof, the width of such continuous end being provided with exsaid flange gradually increasing from one terior screw threads, and the split end of end to the other of said body. 1 said body having exterior projections adapt- 2 n expansion bolt comprising a hollow ed toconstitute anchors, and a spiral flange body, split at one end. and solid at the other, projecting from the inner wall of said h0lprojections arranged on the outside of said body and adapted to bite into the material in which it is set, and a thin fiat continuous the inside of said to engage the threads of screw.

An expansion bolt comprising a hollow low body, and extending from one end to the other thereof the width creasing from one end of the body. to the other.

In testimony whereof I have signed this specification 1n the presence of two subscriblng witnesses.

body and adapted an ordinary wood I body exteriorly screwthreaded and prol RAOUL DIAZ WAGNER. rided on the inside with a continuous spiral lVitnesses: flange, the inner end of such flange deter- EMILE Lnn'nn'r, mining an opening adapted to receive a) H. C. Coxn.

of said flange in- 

